FourT6and2

For track days, I usually use painter's tape to make numbers on the little triangular side windows. After my last time at the track it must have been really hot or I left the tape on too long, but there is still some adhesive or residue or something on the glass. Even after multiple washes it's still there and I can still see the outline of the numbers. Are these windows glass or the lightweight stuff like the rear? Any tips for removing the residue? Maybe a razor blade? I don't want to damage the windows if they aren't actual glass.

Mussl Kar

Goof Off will remove it.

FourT6and2

Have you used Goof Off on this type of material? It isn't glass. And this will destroy plastic/rubber like window trim...

Maybe I'll try Goo Gone first since it's less of a solvent.

rob944s2

The RS rear windows aren't glass. I wouldn't use goo gone or any other solvent on it. I've used goo gone before on clear plastic and the plastic went hazy on me.

PCA1983

Tap the window with your ring and the sound will tell you whether it is plastic or glass.
Scrape off as much as you can with a razor first, if it's glass.
Then apply (the white) Goop cream (the one without the grit). Let it soak, and really if necessary. It stays put a lot longer than any liquid. You can lay some thin paper on it and soak it to help the cream stay there.
I had adhesive remaining on the upper part of the bumper when I removed the Carrera S lettering, fastened by 2 year old foam tape. A lot of the tape adhesive remained. I soaked it with Goop for the better part of an hour, and it came right off. None of those liquids worked for me.

FourT6and2

Ok so it seems the rear and side windows are Gorilla Glass (thin-film glass). Not necessarily "plastic". Same stuff as your iPhone screen, for example. Maybe I can check out Gorilla Glass' website for a list of care instructions.

9eight7

You could try a plastic razor or plastic credit card. That usually takes the glue right off of my windshield.

ccibo72

Did you try some packing tape and dab the sticky side onto the adhesive on the window to see if the two stick and remove? Double sided tape works too if the packing tape isn't sticky enough.

SmokinGTS

Rapid remover is the stuff, also removes track rubber in a blink of an eye. Fantastic stuff.. Made by Rapidtac https://rapidtac.com/rapid-remover.html

shapiroeric

I used gone gone before on them with no issues....

hellboy_mcqueen

991.1 GT3 RS was Lexan.
991.2 GT3 RS was Gorilla Glas.